the-art-of-develop-culture-at-cybozu

by tomoya yokota

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։ൃจԽΛҭͯ ޿͛Δ༇͠Έ Cybozu Tech Conference 2017 @yokotaso

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νʔϜͷ։ൃମ੍ • Ϣʔβʔ؅ཧػೳΛ୲౰ • ։ൃ͸೔ຊɺࢼݧ͸೔ຊ + ্ւ ͷ 2ڌ఺ • ࠷ॳ͸ 1-SprintͰ։ൃ ~ ࢼݧઃܭͰ Done  ։ൃ ~ ࢼݧ׬ྃ·ͰҰݸྲྀ͠΋࠷ۙͰ͖ΔΑ͏ʹ • Ҏલ͸։ൃFixޙʹɺࢼݧ։࢝

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ͳͥKanbanͳͷ͔ʁ • ϚϧνϓϩδΣΫτ୲౰ϝϯόʔ͕ଟ͍ • Өͷ࢓ࣄͷଘࡏ  λεΫΛґཔ͠ʹ͍͘   ୭͕ԿΛ΍͍ͬͯΔͷ͔Θ͔Βͳ͍ • ։ൃ ~ ࢼݧ׬ྃͷ࢓ࣄͷྲྀΕΛ଎͍ͨ͘͠

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։ൃจԽͷྺ࢙

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ΦϯϓϨϛεظͱ։ൃจԽ • ೥୯Ґͷ։ൃɾࢼݧεέδϡʔϧ • Unit Test͕ͳ͍ϓϩμΫτ • ։ൃFixલʹσΠϦʔϏϧυΛಈ͔͢ • ☠☠։ൃจԽ☠☠

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Ϋϥ΢υ૑ੈهͱ։ൃจԽ • ϦϦʔεͷ૿Ճ • ෆ҆ఆͳ඼࣭ͱ։ൃ޻਺ͷരൃ • CI/CDΛར༻ͨ͠඼࣭ͷ҆ఆԽ • ։ൃޮ཰ͷ޲্ʹੵۃ౤ࢿ • ։ൃࢧԉͨΊͷ։ൃจԽ

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Ϋϥ΢υશ੝ظͷ։ൃจԽ • Ϋϥ΢υ૑ੈهͷ։ൃจԽ͕ϕʔεʹվળ  ։ൃͷϘτϧωοΫ͕গͳ͘ͳΔ • ։ൃ͔Βࢼݧ޻ఔ·ͰΛؚΊͨશମ࠷దԽ • Scrum / Kanban ܕͷ։ൃελΠϧ • Ձ஋Λૉૣ͘ಧ͚ΔͨΊͷ։ൃจԽ΁

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։ൃจԽ͸ ϏδωεΛࢧ͑Δ ॏཁͳϑΝΫλʔ΁

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ٙ໰

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ᷚͷϤαήͳ։ൃจԽ ͏ͪʹ͸ೃછ·ͳ͍ͷ ͳΜͰͩΖ͏ʁ

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ಋೖ͚ͨ͠Ͳɺ ଓ͔ͣʹഇΕͯ͠·ͬͨɻ

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αΠϘ΢ζ͞Μ͔ͩΒ ͳΜͰ΋͏·͍͘͘ΜͰ͠ΐ? ͏ͪʹ͸ͪΐͬͱ…

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αΠϘ΢ζͰ΋ࣦഊ͠ͳ͕Β લਐ͍ͯ͠Δͷ͕ݱ࣮ͳͷͰ͢

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೔ຊ&্ւͰKanbanΛ ಋೖͨ͠ͷͱ աڈͷࣦഊΛωλʹ…

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։ൃจԽΛҭͯΔ Practice ຊ୊ʂ

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཯଎͸จԽͷ฼ ϘτϧωοΫ

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ͦΕϘτϧωοΫͳ͘ͳΔͷʁ • ○○จԽΛແཧʹ࡞Ζ͏ͱͯ͠·ͤΜ͔ • ಋೖͨ͠ΒϘτϧωοΫ͕ͳ͘ͳΔͷ͔ʁ • ϘτϧωοΫ͕ղফ͠ͳ͍จԽ͸ഇΕΔ • ίʔυ΍૊৫ͷঢ়گʹΑͬͯ։ൃจԽ΋ଟ༷

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% UnitTestΛ޿ΊΑ͏ͱͨ͠ • UnitTest͕౰ͨΓલͷ։ൃମ੍ʹ͔ͨͬͨ͠ • ౰࣌ͷঢ়گͰ͸UnitTest͸·ͩૣ͔ͬͨ • UnitTest͸ϘτϧωοΫͰ͸ͳ͔ͬͨ  ΄͔ʹେ͖ͳ໰୊͕͋ͬͨ

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&σΠϦʔϏϧυΛࣗಈԽ • ΦϯϓϨɾΫϥ΢υͷΞʔΧΠϒͷ  ϏϧυεΫϦϓτΛ੔උ͠௚ͨ͠ • JenkinsͰ࣮ߦͰ͖Δ͓खܰײ • ΦϯϓϨͱΫϥ΢υͷಉ࣌ࢼݧ͕Մೳʹ  େ͖ͳϘτϧωοΫͩͬͨ

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։ൃจԽͷ࢝·ΓΛ͸͡ΊΑ͏ • ϘτϧωοΫΛղফͰ͖Ε͹େࣄʹ͞ΕΔ • ΈΜͳ͕େ੾ʹ͢Δ΋ͷ   ։ൃจԽͷܧଓʹඞཁෆՄܽ • ։ൃจԽͷ֎ʹ৽͍͠։ൃจԽ͕͏·ΕΔ  όʔϜΫʔϔϯߏ଄

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஥ؒΛ૿΍ͦ͏

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& શһࢀՃܕͷษڧձΛ։͜͏ • ஌ࣝͷϕʔεϥΠϯΛἧ͑Α͏ • ษڧձͷ୊ࡐΛ࢖ͬͯ໰୊ҙࣝͷڞ༗ • γϯϓϧͳݪཧɾݪଇͷཧղ > ࡉ͔ͳ஌ࣝ • શһࢀՃ͠΍͍͢ษڧձΛ  ଥڠͰ͖Δ΋ͷ͸ੵۃతʹଥڠ͢Δ

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&্ւ ೔ຊ Χϯόϯษڧձ • ࡉ͔͍஌ࣝΑΓ΋ɺΧϯόϯͷཧղΛపఈ  WIPɺ࢓ࣄͷྲྀྔ੍ݶ  ࢓ࣄͷՄࢹԽ  ࢓ࣄΛৼΓฦͬͯKanbanͰվળ͢Δʁ

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&্ւ ೔ຊ Χϯόϯษڧձ • ӳޠͰফ໣ͨ͘͠ͳ͔ͬͨͷͰ຋༁ॻΛར༻

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&্ւ ೔ຊ Χϯόϯษڧձ • Χϯόϯ࢓ࣄज़ͷ෇࿥ʹήʔϜ͕͋Δ • KanbanͷݪཧݪଇΛମײͰ͖Δ  ඦฉ͸Ұݟʹ͔ͣ͠ • ։ൃจԽʹ͍ͯͨ͘͠Ίʹ͸ʮͳͥʓʓʁʯ  ͷڞײ͕ඞཁෆՄܽ

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% ༗ࣝऀษڧձΛ։͘ • ϧαϯνϚϯ͕ཷ·Γ͕ͪ • ࢀՃऀ=໰୊ҙ͕ࣝ͋ΔਓͳͷͰޮՌ͕ബ͍ • ϝϯόʔͰ஌͕ࣝࠩग़ͯ͠·͏ • ཧ૝͕ڞ༗Ͱ͖ͳ͍

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Small Start

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Ͱ͖Δ͜ͱΛ͙͢ʹ࢝ΊΑ͏ • ޮՌ͕͋Γͦ͏ͩͬͨΒͬͦ࢝͘͞ΊΑ͏ • Ͱ͖Δ͚ͩγϯϓϧʹ1िؒ΍ͬͯΈΑ͏ • ϓϥΫςΟεͷҰ෦Ͱ΋OK • ࣗ෼ͨͪͰ࡞ͬͯӡ༻ͯ͠ΈΔͷ͕େ੾

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& KanbanΛ͙͢ʹ࡞ͬͨ • ॳճษڧձͷޙʹϗϫΠτϘʔυΛߪೖ • ্ւɺ೔ຊͰ؆୯ͳKanban࡞ͬͯΈͨ • ษڧձͷςʔϚΛKanbanʹద༻  վ଄ͨ͠Γࢼߦࡨޡ • ݟ͍͑ͯͳ͔ͬͨ໰୊ͷൃݟɺ৽ͨͳؾ͖ͮ

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% ஌ࣝΛҰ௨Γ͚͔ͭͯΒ࣮ફ • ϕετɾϓϥΫςΟεͳͷʹ  ։ൃϓϩηεʹͦͷ··ద༻Ͱ͖ͳ͍ • ݱঢ়ͱཧ૝ͷҧ͍ʹർฐ • ϓϥΫςΟεͷվ଄ɺऔࣺબ୒͕ඞཁͩͬͨ

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ޮՌతͳৼΓฦΓ

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& ޮՌతͳৼΓฦΓΛ͠Α͏ • ։ൃจԽͱͯ͠ఆணͤ͞ΔͨΊͷৼΓฦΓ • ݪཧɾݪଇΛҙࣝͯ͠ৼΓฦΓΛͯ͠ΈΑ͏ • ݪཧɾݪଇΛҙࣝͯ͠KAIZENΛߟ͑Α͏ • ஌͕ࣝఆண͍ͯ͠Δ͔ͷࢼۚੴ

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& ๙ΊΔϙΠϯτ͕໌֬ʹ • A͞ΜͷWIP͕ᷓΕͯͨͷͰλεΫΛ  Ҿ͖ड͚·ͨ͠ • WIP͕ߴ͍ͷͰToDoλεΫΑΓ΋  ϨϏϡʔλεΫΛऴΘΒͤΔ͜ͱʹ஫ྗͨ͠ • ো֐ରԠͳͲ͕ՄࢹԽ͞ΕͨͷͰɺ  ϨϏϡʔґཔͷ૬खΛ޻෉Ͱ͖ͨ

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& ݪଇ͔ΒΈ͑ͨProblem • AλεΫΛ΍͍ͬͯΔ࣌ʹWIP͕૿Ճͨ͠ • ্ւͷWIP͕ߴ͍ͷ͸ͳΜͰͩΖ͏ʁ • ϚϧνϓϩδΣΫτͷ࢓ࣄΛ͢Δͱ͖  WIPΛͲ͏ѻ͏΂͖ʁ

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% ;ΜΘΓͨ͠ৼΓฦΓ • ᘭ຤ͳProblem Λղܾ͢ΔՁ஋͸͋Δ͔ʁ  ෳࡶͳղܾࡦΛ࠾༻ͯ͠ͳ͍ʁ • ։ൃϓϩηεͷϘτϧωοΫΛղফͰ͖Δ  Problemͷൃݟɺௐࠪɺղܾʹ஫ྗ͠Α͏

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KAIZENͱकഁ཭

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& ৼΓฦΓ͔ΒKAIZEN͢Δ • ҰൠతͳPracticeʹ໡໨తʹैΘͣ  ૊৫Χϧνϟʔʹ͋Θͤͯऔࣺબ୒  վ଄͠Α͏ • ࣗ෼ͨͪʹ߹ΘͤͯɺPracticeΛ  มߋ͍ͯ͘͜͠ͱ͕େ੾

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& कɾഁɾ཭ʂ • (Problem)   ։ൃ։࢝࣌͸ɺWIP͕௿͍ͷʹ  ϨϏϡʔͷ΍ΓͱΓ͕࢝·ΔͱWIP͕ߴ·Δ • (Try)  Review଴ͪͷ࣌ʹToDoͷ࢓ࣄΛ࣋ͪࠐΉͷ͕  ݪҼͩͬͨɻKanbanΛվ଄ͩʂ

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Before ToDo Doing Done

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Before ToDo Doing Done WIPͷ੍ݶ͕ͳ͍ͷͰ ToDoͷ࢓ࣄ͕։࢝͞Εͯ ͠·͏

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Before ToDo Doing Done ϨϏϡʔΛґཔͨ͠Β ՋʹͳΔͷͰ  ToDoʹணख͢Δ ࣮૷ ࣮૷

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Before ToDo Doing Done ϨϏϡʔ͕ؼͬͯ͘Δͱ DoingͷྻͷWIP͕  ૿Ճͯ͠͠·͏ ϨϏϡʔ ϨϏϡʔ ϨϏϡʔ ࣮૷ ࣮૷

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Before ToDo Doing Done WIP͕ߴ͍ঢ়ଶ͸ ࢓ࣄͷ଎౓Λམͯ͠͠·͏ ͷͰKanbanͰ͸ݏΘΕΔ ϨϏϡʔ ϨϏϡʔ ϨϏϡʔ ࣮૷ ࣮૷

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After ToDo Doing Review Done ΞόλʔΛಋೖͨ͠ 1ਓ͋ͨΓ3ͭ  ࢓ࣄ͕Ͱ͖Δ

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After ToDo Doing Review Done ReviewྻΛ৽ઃ  ϨϏϡʔ͸ૣ͘  ऴΘΒ͍ͤͨͷͰɺ  ؔ܎ऀͷΞόλʔΛ  શ͓ͯ͘

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After ToDo Doing Review Done ϨϏϡʔ͸༏ઌ౓͕  ߴ͘ͳΔ ͸ToDoΛDoingʹ  ҠಈͰ͖ͳ͍

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& ૊৫ʹ͋Θͤͨ։ൃจԽ • ૊৫ͷঢ়گ΍໰୊ʹ͋Θͤͨ։ൃจԽ • ૉͷPracticeͷద༻͔Β։ൃจԽ΁ • KAIZEN͔ΒPracticeΛվ଄͢Δ༐ؾ • ։ൃจԽ͸νʔϜͰҭͯ·͠ΐ͏

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& ւ֎ڌ఺͸Ͳ͏ͨ͠ͷ͔ʁ • ্ւͷKanban΋্ւͷΧϧνϟʔΛଚॏ • ࠷ॳͷKanbanΛ࡞Δͷ͚͓ͩख఻͍  ࠔΓ͝ͱ૬ஊ΍஫ҙשى͙Β͍ • ڕΛ༩͑ΔΑΓڕͷ௼ΓํΛڭ͑Α

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& ւ֎ڌ఺͸Ͳ͏ͨ͠ͷ͔ʁ • جຊ͸kintoneͰλεΫॲཧ • ֤ڌ఺ͷKanbanͷը૾Λఆ࣌ʹΞοϓϩʔυ  ଞڌ఺ͷλεΫ଴ͪʹؾͮ͘  ଞڌ఺ͷWIPΛ૿΍͗͢͠ͳ͍Α͏ʹ • ؅ཧίετ͕͔͔Βͳ͍ӡ༻Λҙࣝ

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ෳརͱ࠶౤ࢿ

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• ෳར(༨৒࣌ؒ)Λ։ൃจԽʹ࠶౤ࢿ͍ͯ͘͠ • ఆணͨ͠։ൃจԽΛϕʔεʹ৽͍͠௅ઓ΁  UnitTest ὎ CI/CD ὎ Scrum/Kanban ὎ … • ௅ઓΛ͢ΔͨΊʹ։ൃจԽΛKAIZEN͍ͯ͘͠ ։ൃจԽΛਐԽͤ͞Α͏

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ςετΤϯδχΞʂ  ൥ࡶͳࢼݧखॱͷࣗಈԽ͍ͨ͠

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վमޙɺଈϦϦʔε͍ͨ͠ʂ ։ൃϓϩηεͷਐԽ͸ ·ͩ·ͩඞཁʂ

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ΑΓΞδϟΠϧͳ։ൃจԽ΁ • ։ൃจԽΛ࡞Γม͖͑ͯͨࣄ࣮͕  ૊৫ͷେ͖ͳࡒ࢈ɺ૊৫ͷجૅମྗʹͳΔ • ΞδϟΠϧͳ։ൃϓϥΫςΟεͰ͸ͳ͘  ΞδϟΠϧͳ૊৫ɺ։ൃจԽΛ໨ࢦ͢ • ໰୊͸͋Δ͕ɺมΘ͍͚ͬͯ͹͍͍

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։ൃจԽΛ ਐԽͤ͞Δ  औΓ૊Έ͸ଓ͘

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ͦͯ͠ɺເͷ֎΁

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૊৫Λ௒͑ͯ։ൃจԽ͕޿͕Δ • ڌ఺ ૊৫Λ௒͑ͯ։ൃจԽΛҭͯΔऔΓ૊Έ • ։ൃจԽΛҭͯ޿͛ΔίπΛ͓࿩͠·ͨ͠ • 100૊৫͋ͬͨΒ100௨Γͷ։ൃจԽ • ϘτϧωοΫΛղফ͢Δ։ൃจԽͰ͋Ε

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ΦϯϓϨϛε࣌୅ͱ͸ִੈײ • ։ൃจԽ͕ત·͔ͬͨ࣌͠୅ • ։ൃจԽ͕͋Δ૊৫ʹಌΕ͍ͯͨ • ಌΕ͔Β։ൃจԽͷ͋Δ૊৫ʹͳΕͨ • ͦͯ͠ɺເͷ֎΁  ͜Ε͔Β΋։ൃจԽΛҭ͍͖͍ͯͯͨ